Patents for H05B 41 - Circuit arrangements or apparatus for igniting or operating discharge lamps (35,100) |
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12/25/2012 | US8339068 LED brightness control by variable frequency modulation |
12/25/2012 | US8339061 Illuminating system having sequential color filtering and a high-pressure discharge lamp |
12/25/2012 | US8339060 Ignition transformer for a discharge lamp |
12/25/2012 | US8339058 Three-color RGB LED color mixing and control by variable frequency modulation |
12/25/2012 | US8339057 Circuit arrangement, and method for the operation of a high-pressure discharge lamp |
12/25/2012 | US8339051 Electronic flash unit and manufacturing method thereof |
12/25/2012 | US8339048 Hybrid light source |
12/20/2012 | WO2012172926A1 Ceramic metal halide lamp illumination device |
12/20/2012 | US20120319622 Systems And Methods For Conveying Information Using A Control Signal Referenced To Alternating Current (AC) Power |
12/20/2012 | US20120319599 Light source apparatus, discharge lamp driving method, and projector |
12/20/2012 | US20120319593 Lighting Device with Switchable Day/Night Illumination Mode |
12/19/2012 | CN202617489U Digital multistage driving power supply of ultraviolet (UV) lamp |
12/19/2012 | CN202617488U Electrodeless lamp with midnight lamp timing function |
12/19/2012 | CN202617487U Electrodeless lamp with light-dependent control function |
12/19/2012 | CN202617486U Driving circuit of high-frequency electrodeless lamp circuit power half bridge |
12/19/2012 | CN202617485U Switching power supply |
12/19/2012 | CN202617484U Self-excited oscillation type high-frequency electronic generator |
12/19/2012 | CN202617483U High-frequency electronic ballast control circuit |
12/19/2012 | CN202617482U Electronic ballast with protection circuit |
12/19/2012 | CN202617481U Electrodeless metal halogen lamp circuit |
12/19/2012 | CN202617480U Inductance ballasting T5 energy saving lamp |
12/19/2012 | CN202617479U Pulse lamp circuit |
12/19/2012 | CN202617478U Electronic ballast |
12/19/2012 | CN202616747U Dual-thyristor electric leakage protection device capable of resisting electronic daylight lamp starting high-frequency interference |
12/19/2012 | CN202613373U Power supply device of electrodeless lamp |
12/19/2012 | CN102833930A Lamp drive device |
12/19/2012 | CN102833929A Self-ballasted fluorescent lamp and open loop protection circuit thereof |
12/19/2012 | CN102833928A Method for solving problem of high-frequency driving acoustic resonance of high voltage sodium lamp |
12/19/2012 | CN102833927A General electronic ballast |
12/19/2012 | CN102833926A Light source apparatus, discharge lamp driving method, and projector |
12/19/2012 | CN102833925A Screw-in single-end electronic ballast |
12/19/2012 | CN101933118B High-pressure discharge lamp system and projector using the same |
12/19/2012 | CN101852833B Abnormity detection circuit |
12/19/2012 | CN101848591B Driving circuit of backlight system |
12/19/2012 | CN101848584B 230V passive high-power factor circuit |
12/19/2012 | CN101754552B Microminiature xenon-lamp high-pressure modular power supply |
12/19/2012 | CN101742792B Discharge lamp ignitor, as well as lighting fixture and projector using same |
12/19/2012 | CN101742791B High-voltage discharge lamp ballast, lighting device and lighting system |
12/19/2012 | CN101730356B Discharge lamp lighting device and illumination fixture |
12/19/2012 | CN101662908B Electrical equipment, a lamp lighting device of a discharging lamp and lighting fixtures |
12/19/2012 | CN101370343B High-frequency power supply type trigger |
12/19/2012 | CN101300903B Light sources device and projector having the same |
12/18/2012 | US8334662 Adaptive switch mode LED driver |
12/18/2012 | US8334660 Light source driving circuit with low operating output voltage |
12/18/2012 | US8334658 Dimmer-disabled LED driver |
12/13/2012 | WO2012170137A1 Dimming ballast for electrodeless lamp |
12/13/2012 | WO2012167292A1 Method for operating an electronic ballast for a luminous means, and electronic ballast |
12/13/2012 | WO2012143841A3 Instant start ballast system |
12/13/2012 | US20120313550 Apparatus and method for driving cold cathode fluorescent lamp by detecting driving characteristic of cold cathode fluorescent lamp |
12/13/2012 | US20120313549 Filament Detection Circuit |
12/13/2012 | US20120313548 Ac-dc dual-use led driving circuit |
12/13/2012 | US20120313546 High pressure discharge lamp lighting device |
12/13/2012 | US20120313545 Pulse width modulation fault mode for illuminating device drivers |
12/13/2012 | US20120313539 Ballast with control device for controlling the open-circuit voltage |
12/13/2012 | US20120313530 Parallel-Connected Ballast Circuits |
12/13/2012 | US20120313527 Lamp ballast having filament heating apparatus for gas discharge lamp |
12/13/2012 | DE102011103638A1 Verfahren zum Betreiben eines elektronischen Vorschaltgeräts für ein Leuchtmittel und elektronisches Vorschaltgerät A method of operating an electronic ballast for an electronic ballast lamps and |
12/13/2012 | CA2833945A1 Dimming ballast for electrodeless lamp |
12/12/2012 | CN202603028U Control wiring of H7 xenon lamp |
12/12/2012 | CN202603027U Fluorescent lamp ballast driver chip |
12/12/2012 | CN202603026U Electronic ballast capable of protecting fluorescent tube |
12/12/2012 | CN202603025U Starter for fluorescent lamp |
12/12/2012 | CN202603024U Ballast circuit of electronic energy-saving lamp with protection against overvoltage or abnormal states |
12/12/2012 | CN202603023U Electronic energy-saving lamp ballast circuit with protection for end of service life |
12/12/2012 | CN202603022U Fluorescent lamp ballast chip based on system-level packaging |
12/12/2012 | CN202601366U Adjustable inductor |
12/12/2012 | CN102821531A 'AC-AC (alternating current) regulation and control' based numerical-control HID (high intensity discharge) driving method and driver applying same |
12/12/2012 | CN102821530A Apparatus and method for driving cold cathode fluorescent lamp by detecting driving characteristic of cold cathode fluorescent lamp |
12/12/2012 | CN102821529A Control device of fluorescent lamps in concert |
12/12/2012 | CN102821528A Self-ballasted fluorescent lamp or single-capped fluorescent lamp without helical discharge arcs |
12/12/2012 | CN102820203A Self-ballasted fluorescent lamp free of electromagnetic radiation |
12/12/2012 | CN101925243B Intelligent electronic ballast |
12/12/2012 | CN101925242B Electronic ballast with wide voltage input |
12/12/2012 | CN101858579B Low-voltage movable xenon illuminating system |
12/12/2012 | CN101801149B Discharge lamp lighting device, method of driving discharge lamp, and projector |
12/12/2012 | CN101754549B Protective circuit of electronic ballast |
12/12/2012 | CN101702862B Novel light modulator |
12/12/2012 | CN101578922B Ignition transformer for a discharge lamp |
12/11/2012 | US8330396 Starting device with two input poles |
12/11/2012 | US8330385 Light bar |
12/11/2012 | US8330384 Power supply unit, light emitting apparatus and dimming method thereof |
12/11/2012 | US8330383 Method and system for dependently controlling colour light sources |
12/11/2012 | US8330382 Electronic ballast for correcting asymmetrical current flow across a gas discharge lamp |
12/11/2012 | US8330381 Electronic circuit for DC conversion of fluorescent lighting ballast |
12/11/2012 | CA2613242C Dimmer having a microprocessor-controlled power supply |
12/06/2012 | WO2012164588A1 High-efficiency electronic device for turning on and power supplying of lamps |
12/06/2012 | WO2012163624A1 Illumination system, relative compact fluorescent lamp and relative replacement method |
12/06/2012 | US20120306408 Energy-recycling burn-in apparatus for electronic ballasts and a method of burning-in electronic ballasts |
12/06/2012 | US20120306402 Ac voltage reduction by means of a transformer |
12/06/2012 | US20120306400 Digital Controller for an Electronic Ballast |
12/06/2012 | US20120306395 Hid lighting system |
12/06/2012 | DE102011103413A1 Verfahren zum Schalten einer getakteten Sperrwandlerschaltung, Sperrwandlerschaltung sowie Heizschaltung für eine Wendel eines Leuchtmittels mit einer derartigen Sperrwandlerschaltung A method of switching a clocked flyback converter circuit flyback converter circuit and heating circuit for a spiral of a lamp with such a flyback converter circuit |
12/06/2012 | DE102011103409A1 Verfahren zum Heizen einer Wendel eines Leuchtmittels und entsprechende Heizschaltung Method for heating a filament of a lamp and corresponding heater circuit |
12/05/2012 | EP2529600A1 Ac voltage reduction by means of a transformer |
12/05/2012 | EP2529599A2 Operating device for gas discharge lamps |
12/05/2012 | EP2529598A1 Device for ignition and operating discharge tubes by using energy impulse and resonance circuit |
12/05/2012 | EP2529597A2 Method for operating a gas discharge lamp and gas discharge lamp system |
12/05/2012 | EP2529595A1 Adaptive optics system for harmonization and balanced lighting in information displays |
12/05/2012 | CN202587567U Three-section light adjustment control signal forming circuit of fluorescent lamp ballast |
12/05/2012 | CN202587566U Control circuit for energy-saving lamp |